Thanks To Everybody for the Help
I just wanted to say thank you for all of the help. I got all of the info i needed about the 73 Javelin. and once i check the Casting number on the block i will figure out if...

i´m surprised too that you don´t know the Merkur XR4Ti ?
That´s the "american" Sierra.
but now you know this car.
I like to show the americans the Ford Sierra. It´s a great car, my family was always driving Sierra. And they drive Sierra till today.